Thanks for your input Claudeone! My CRF kitty has been gone almost 4 years (next month) but she never took any renal supplements. She did take other medicines, cisapride for megacolon, and pepcid ac, and she had hyperthyroid high blood pressure ( one or the other or both often accompany CKD) but couldn't tolerate the medications that treat them.
The only thing I did for her kidney disease was sub q fluids four times a week, 150 ml. She ate a wet diet. She was just shy of 15 when she was diagnosed, and left me right before she turned 18. It was a third stroke that took her from me, not the CKD.
Please feel free to start a thread telling us all about your Sadie.